AIESEC and IAESTE at TU Berlin  International student organisation with individual internship programs
CERN  European Organization for Nuclear Research near Geneva with special programs for students and postgraduates
GIZ  Internships in developing and emerging countries
KOPRA  Internships in Eastern Asia
Traineeships in the European Comission 
Voluntary Services - an Alternative to Internships?
Voluntary services are usually carried out during a gap year, such as after graduation or in between academic cycles. Due to its focus on furthering charitable causes, volunteering does not allow you to gain as much occupational expertise as an internship. In addition, the quality and purpose of many programmes have suffered due to an increasing commercial interest in the sector, a phenomenon often referred to as Voluntourism.
To ensure that your voluntary service is truly beneficial to you, we recommend caution and careful preparation when choosing a suitable programme.
Volunteering abroad (German only) & Voluntary Services in Germany 
Positions for Volunteers 
International Workcamps  (German only)